IEC 60 603-13. UL. Harting SEK-18 Series 2.54mm Low Profile Shrouded Headers with Angled Solder Pins. SEK-18 series 2.54mm low profile shrouded headers with 2.9mm long angled solder pins available with up to 64 contacts. Available in a range of lengths Performance level 2 SEK Series Number of Contacts 6 64